Field commandField = ServerMessageBlock2.class.getDeclaredField("command");
        commandField.setAccessible(true);
        int command = (int) commandField.get(req);
        assertEquals(0x0001, command); // SMB2_SESSION_SETUP command value

        Field securityModeField = Smb2SessionSetupRequest.class.getDeclaredField("securityMode");
        securityModeField.setAccessible(true);

        // Bit 2: active (1)
        // Bit 1: permanent (1)

        // MAC address
        byte[] testMac = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
        System.arraycopy(testMac, 0, src, srcIndex + 19, 6);

        // Statistics
        byte[] stats = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
        System.arraycopy(stats, 0, src, srcIndex + 25, 6);

        response.readRDataWireFormat(src, srcIndex);

    }

    @Override
    protected int writeSetupWireFormat(final byte[] dst, int dstIndex) {
        dst[dstIndex] = this.getSubCommand();
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;
        return 2;
    }

    @Override
    protected int writeParametersWireFormat(final byte[] dst, int dstIndex) {
        final int start = dstIndex;

@DisplayName("Smb2LeaseState Tests")
class Smb2LeaseStateTest {

    @Test
    @DisplayName("Should define correct lease state constants")
    void testLeaseStateConstants() {
        assertEquals(0x00, Smb2LeaseState.SMB2_LEASE_NONE);
        assertEquals(0x01, Smb2LeaseState.SMB2_LEASE_READ_CACHING);
        assertEquals(0x02, Smb2LeaseState.SMB2_LEASE_HANDLE_CACHING);

        expected[0] = 0x04; // Buffer format
        System.arraycopy(directoryName.getBytes(StandardCharsets.UTF_8), 0, expected, 1, directoryName.length());
        expected[directoryName.length() + 1] = 0x00; // Null terminator

        byte[] dst = new byte[100];
        int bytesWritten = smbCom.writeBytesWireFormat(dst, 0);

        }

        @Test
        @DisplayName("Should handle ciphers with maximum value")
        void testMaximumCipherValues() throws SMBProtocolDecodingException {
            int[] ciphers = { 0xFFFF, 0x0000, 0x7FFF };
            EncryptionNegotiateContext originalContext = new EncryptionNegotiateContext(mockConfig, ciphers);

            int encoded = originalContext.encode(buffer, 0);

import jcifs.internal.smb2.ServerMessageBlock2;

public class Smb2LeaseBreakNotification extends ServerMessageBlock2 {
    // Command code for lease break
    public static final int SMB2_OPLOCK_BREAK = 0x0012;
    
    private int structureSize;
    private int flags;
    private Smb2LeaseKey leaseKey;
    private int currentLeaseState;
    private int newLeaseState;
    private int breakReason;

        final int start = di;
        int ch;
        final int strlen = str.length();

        for (int i = 0; di < dlim && i < strlen; i++) {
            ch = str.charAt(i);
            if (ch >= 0x0001 && ch <= 0x007F) {
                dst[di] = (byte) ch;
                di++;
            } else {
                if (ch > 0x07FF) {
                    if (dlim - di < 3) {
                        break;

    class HexConversionTests {

        @Test
        @DisplayName("Various byte values are converted to uppercase hex")
        void testHexConversion() {
            byte[] challenge = new byte[] { (byte) 0x00, (byte) 0x0F, (byte) 0x10, (byte) 0x7F, (byte) 0x80, (byte) 0xFF };
            UniAddress dc = mock(UniAddress.class);
            when(dc.toString()).thenReturn("DC");

     * Creates a new session service packet instance.
     */
    public SessionServicePacket() {
        // Default constructor
    }

    // session service packet types
    static final int SESSION_MESSAGE = 0x00;
    static final int SESSION_REQUEST = 0x81;

    /**
     * NetBIOS positive session response packet type.
     */
    public static final int POSITIVE_SESSION_RESPONSE = 0x82;

    /**